Verified: CGDI Prog MB can read NEC chip from the original Mercedes-Benz key

What is a Mercedes NEC key?

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RF front end decoder chip: this is a custom chip that takes the signal direct from the antenna and does IF filtering as well as decoding and then supplies a serial data output for the microcontroller

NEC 8 bit microcontroller 78K0s series: this is the actual controller chip, actually a ‘secure’ version of the standard microcontroller. this holds the code that controls the code hopping algorithm as well as the individual ID codes for each transmitter.